Biology-Ch.23 Response

Biology-Ch.23 Response - can alter allele frequencies. 3....

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Biology-Ch.23 Response Ch.23: Explain the five conditions that are required for Hardy-Weinberg equilibrium. Hardy-Weinberg equilibrium occurs within populations which have the same allele frequencies from one generation to the next. It is easier to predict genotype frequencies in populations in this state. The conditions for Hardy-Weinberg equilibrium are listed below: 1. “Extremely large population size”: When a population size is on the small side, fluctuations in allele frequencies, known as genetic drift, affect populations more from generation to generation. 2. “No gene flow”: The transfer of alleles between populations is known as gene flow and
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Unformatted text preview: can alter allele frequencies. 3. “No mutations”: Mutations are the alteration of chromosomes by introducing, removing, or changing alleles; mutations modify the gene pool in a population. 4. “Random mating”: The mixing of gametes cannot occur if individuals always choose mates with certain genotypes. 5. “No natural selection”: Allele frequencies will be altered if individuals with different genotypes are more fit, with better survival and reproductive success, than others. This state of equilibrium is rarely seen in nature, if at all. Populations that have an extremely slow rate of evolution appear to be at equilibrium....
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This homework help was uploaded on 04/07/2008 for the course BIOL 152 taught by Professor Schnurr/vawter during the Spring '08 term at Wells.

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